Improvement in apparatus for refining sugar



2 Sheets--Sheet 1.

F. UpMA'TTHIESSEN. Apparatus for Rening Sugar. No.l63,093'.

Patened May H, 1875.

NTTEE STATEs RETENT GEEICE.

FRANZ O. MATTHIESSEN, OF NEW YORK, N. Y.

IMPROVEMENT IN APPARATUS FOR. REFINING SUGAR.

Specification forming part of Letters Patent No. E 63,093, dated May l'l, 1875; application filed April 14, 1875.

OASE E.

To all whom it may concern Beit known that l, FRANZ O. MATTHIES- SEN, of the city and State ot' New York, have l invented certain Improvements in Apparatus chamber containing removable trays or pans.

placed upon hollow shelves or supports, in

y which a hot-water or hot-air circulation is maintained, my vacuum-chamber being provided with hermetically-closing doors, which can be opened to admit of the introduction or removal ot' the trays.

.The accompanying drawings are as follows: Figure l is a front view ot' a vacuum-pari connected with my vacuum-chamber, the latter having its doors open so as to exhibit the in terior arran gement of the hollow shelves which support the trays in which the sugar producti'rom the vacuum-pan isdeposited; also showing the injection-pipes for directing the `sugar product to the upper trays, from which 1t overflows to the trays next beneath, and so on. Fig. 2 is a horizontal section through the line uw on Fig. l, showing the connections for establishing the hot-water circulation. Fig. 3 isa side elevation, showing the clamps for hermetically closing the doors, and the hotwater connections with the various shelves.

My vacuumchamber A is provided with doors a a, which are hermetically closed by means of the clamps a a. An externa-l valve, b, closes the injection-pipe b1, and b2 b2 are branches, by means ot' which the injected product from the vacuum-pan V is discharged upon the right and the left hand trays. c is a small pipe for connection with an exhauster, so that when the valve b is closed a more or less partial vacuum can be maintained in the chamber A.

The hollow shelves e e are connected with the upright hot water pipes e c'. The rim ot' each ot' the trays or pans f is lower on one side than the other, to allow the overiiow of the material operated upon when the pan has received the proper quantity. The lower pans are so placed, relatively to the upper pans, that they each receive the overflow from'the pans next above them. Each ot' the hollow shelves has a central vertical partition,A e, open at the end opposite the connecting-pipes, andthe direction of the hot-water or hot air circulation is shown by the arrows in Fig. 2. An exhaust-pipe, c, is connected with the injection-pipe b1, below the valve b, for the purpose of withdrawing air from the interior of the chamber, when the doors are hermetically closed, so as to create a partial vacuum therein.

ln case it should be desired to subject the material operated upon in the trays to the direct action of hot air, the vacuum-chamber is provided with a hot-air injection-pipe, h.

The peculiarities of this apparatus are, first, that the trays in which the sugar mass is deposited are supported in horizontal positions, and are removable; and, secondly, that the doors of the vacuum-cliamber, which open to allow oiaccess to the interior of the chamber for the introduction or removal ofthe trays, are capable ot' being hermetically closed, so as to preserve the vacuum in the chamber, thirdly, that the apparatus includes a provision for the introduction of hot air into the chamber, in addition to the system ot' pipes in which a hot-air or hot-water circulation is maintained, so that the material contained in the trays may be heated by radiation from the surface of the hot-air or hot-water pipes, or by theA drawing the air from the chamber, and having a removable side capa-ble of hermetioai apl pans by direct Contact with hot air, substanplication. tially as set forth.

3. In combination with a vacuum-pan, a vacuum chamber provided with heating- F. O. MATTHIESSEN. shelves, and a'hot-aiir injection-pipe and re- Witnesses: movable trays or pans, for the purpose of ISAAC ROMAINE,

heating the material contained in the trays or E. FUCHS. 

